Johnson County, WY Weather Forecast
County weather hub
Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms
Compare major city weather across Johnson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then scattered showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then scattered showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then scattered showers and thunderstorms. Partly sunny, with a high near 71. Northwest wind 5 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Johnson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Johnson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 30 to Jun 4, 2026
- Latest sync
- May 29, 2026 5:57 PM MDT
- Forecast office
- RIW
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnson County
Thursday looks like the warmest upcoming period in Johnson County at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 43 degrees F.
The strongest winds are forecast for Monday at about 5 to 14 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- May 29, 2026 5:57 PM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- RIW
- Radar station
- KRIW
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Isolated showers and thunderstorms before 9pm, then scattered showers and thunderstorms. Partly cloudy, with a low around 52. West wind 3 to 12 mph. Chance of precipitation is 40%.
A chance of rain showers before 9am, then showers and thunderstorms. Mostly cloudy, with a high near 61. North northeast wind 3 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 43. West wind 5 to 10 mph. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70. South southwest wind 5 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45.
Sunny, with a high near 77.
Mostly clear, with a low around 48.
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 79.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 82.
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms
|
71°F |
5 to 13 mph
NW
|
|
Saturday Night
May 30
|
Isolated Showers And Thunderstorms then Scattered Showers And Thunderstorms
|
52°F |
3 to 12 mph
W
|
|
Sunday
May 31
|
Showers And Thunderstorms
|
61°F |
3 to 10 mph
NNE
|
|
Sunday Night
May 31
|
Showers And Thunderstorms Likely
|
43°F |
5 to 10 mph
W
|
|
Monday
Jun 1
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
70°F |
5 to 14 mph
SSW
|
|
Monday Night
Jun 1
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
45°F |
5 to 12 mph
WNW
|
|
Tuesday
Jun 2
|
Sunny
|
77°F |
6 to 13 mph
SW
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
48°F |
6 to 12 mph
NW
|
|
Wednesday
Jun 3
|
Sunny then Slight Chance Showers And Thunderstorms
|
79°F |
5 to 9 mph
NE
|
|
Wednesday Night
Jun 3
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
50°F |
5 to 10 mph
NNW
|
|
Thursday
Jun 4
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
6 to 14 mph
NW
|
|
Thursday Night
Jun 4
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
51°F |
6 to 12 mph
NNW
|
Major City Forecasts
Live forecast snapshots for major cities across Johnson County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Johnson County.
Largest mapped city population in this region: 4,659.
